Intel Pentium D 805 overclocked from 2.66GHz to 4.1GHz

Tom's Hardware Guide has an extensive article on how they broke the 4GHz barrier and overclocked the cheap $130 dual-core Intel Pentium D 805 from 2.66GHz to 4.10GHz!

The basic stats for this insignificant-seeming budget processor read as follows: Pentium D 805 clocked at 2.66 GHz, equipped with two processor cores both with 64 bit support. At your friendly neighborhood retailer you can pick up this secret weapon for pocket change - right now, for example, it's available at newegg.com for just under $130. We were quite amazed as the first performance figures emerged from our test labs: stable operation was possible at 4.1 GHz, and without even the need for substantial boosts to cooling!